<svg xmlns="http://www.w3.org/2000/svg">
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    rect { stroke: black; }
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        style="fill: yellowgreen">
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  <rect x="70px" y="20px" width="15px" height="15px"
        style="fill: yellowgreen">
  </rect>
  <rect x="120px" y="20px" width="15px" height="15px"
        style="fill: rgb(184, 220, 88)">
  </rect>
  <rect x="20px" y="70px" width="15px" height="15px"
        style="fill: rgb(229, 243, 144)">
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  <rect x="70px" y="70px" width="15px" height="15px"
        style="fill: rgb(253, 255, 174)">
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        style="fill: rgb(255, 255, 238)">
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  <rect x="20px" y="120px" width="15px" height="15px"
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        style="fill: rgb(255, 255, 255)">
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</svg>
